Construction of screw-presses and their



UNITED sTATEs PATENT oEEroE.

RICHARD JONES, OF CIRCLEVILLE, OHIO.

CONSTRUCTION 0F SCREW-PRESSES AND THEIR APPLICATION T0 THE PRESSURE OFELAIN FROM TALLOW.

Specification of Letters Patent No. 2,280, dated October 9, 1841.

To all whom t may concern Be it known that I, RICHARD JONES, ofOircleville, in the county of Pickaway and State of Ohio, have madecertain improvements in screw-presses, and in the manner of applying thesame to the pressing of lard, tallow, and other animal fats containingelain and stearin, so as to separate them from each other; and I dohereby declare that the following is a full and exact descriptionthereof.

My improvement in the screw press consists in attaching to the shaft ofthe screw, a scroll, or furzee, wheel, to the larger end of whichscroll, or fusee, wheel one end of a rope, or chain, is to be attached;and after being wound around said scroll wheel, or fusee, the other endof said rope, or chain, may be attached to a windlass, or to a secondscroll wheel made to operate as a windlass, or the rope may be passedover a pulley, and be drawn upon by a weight affixed to its end. It isin this latter manner that I employ it in the pressing of lard, tallow,&c., for the separating of the elain and stearin; as by this means Iobtain a continued, and gradually increasing pressure, which is the kindbest adapted t-o the producing of the eect intended.

The accompanying drawing is a side view of my improved press, the screwbeing placed to work horizontally.

rIhe shaft A, A, upon which the screw is cut may be divided into threeequal parts, one third of which is to constitute the screw, that is towork through a nut in the standard B. The middle portion of the shaftmay be made square, to receive the scroll, or fusee wheel C, which maybe six feet in diameter at its larger, and six inches at its smallerend, or of any other size that will adapt it to the particular purposeto which itl is to be applied. The part A', of the shaft is to becylindrical, and is to revolve and slide freely in a hole, or box, inthe standard D.

E, is the rope which after being wound upon the fusee wheel, from thelarger to the smaller end thereof, is passed over a pulley F, on theupper end of the standard D; or said pulley may be aflixed to a beam inthe building containing the press, or in any other convenient manner. Aweight G, be-

ing attached to this rope will cause it to draw upon the fusee wheel,and the form of the latter will cause this force to increaseprogressively as the screw advances.

In adapt-ing this press to the pressing of lard, tallow, dc., the screwA, is made to operate against a follower in a trough H. This trough isto be strongly put together, and extends from the standard B, to thestandard I. It should be about ten inches square on the inside, and belined with sheet metal. In preparing to press the lard, or tallow, Itake about two pounds of the former, or three pounds of the latter, andinclose it in pieces of bed ticking, so as to form a package of about 8inches square, there being several thicknesses of the cloth on each sideof the contained material. The packages so formed are then put into thetrough in the following manner. Against the follower is placed a solidplate of iron ten inches square, and a fourth of an inch thick, andaga-inst this is placed a plate of sheet iron, ten inches square, andone sixteenth of an inch, or less, in thickness, said plate havingnumerous holes punched through it so as to raise burs, in the manner ofa grater, on one side of it, which side is to be placed against thesolid plate of iron. Against this a package of the lard, or tallow, isto be placed; then a sheet of the perforated iron wit-h the bursoutward; against this a plate of the solid meta-l; and proceeding inthis order the trough is to be filled, when the weight is to be made todraw upon the rope and the pressure commenced. The elain which isseparated is to be allowed to run out through a spout in the bottom ofthe trough. The manner of arranging the solid and the perforated platesof metal admits of the free escape of the elain through the latter andbetween the two.

Having thus fully described the manner in which I construct my improvedscrew press, and in which I have adapted it to the separating the elainand stearin, in lard, tallow, &c., what I claim therein as new, anddesire to secure by Letters Patent, is-

1. The combining of the scroll, or fusee wheel with the screw, byplacing the former on the shaft of the latter, and employing it in themanner, and for the purpose, set forth.

2. I do not claim the use of a scroll, or fusee wheel, as applied to apress for the purpose of obtaining a progressive increase of power, thishaving been before done; but spaces between each pair of plates for theI do claim the direct application thereof to ready esca-pe of the elain,as described. the shaft of a screw, as set forth.

3. likewise claim the manner in Which I 5 use alternate plates of solidand of perfo- Witnesses:

rated metal, petween the packages of lard, THos. P. JONES, talloW, 85e.,in the trough, so as to provide M. E. JONES.

RICHARD JONES.

